Results 31 to 40 of about 17,384 (223)

Spatial and temporal variation of natural toxicity in cnidarians, bryozoans and tunicates in Mediterranean caves

open access: yesScientia Marina, 2005
The natural toxicity of cnidarians, bryozoans and tunicates in two caves was assessed using the Microtox® technique in spring and autumn. One cave was located in the Cabrera Archipelago (Balearic Islands) and the other in the Medes Islands (Catalan ...
Ruth Martí, Maria J. Uriz, Xavier Turon
doaj   +1 more source

Morphological diversity of medusan lineages constrained by animal–fluid interactions [PDF]

open access: yes, 2007
Cnidarian medusae, commonly known as jellyfish, represent the earliest known animal taxa to achieve locomotion using muscle power. Propulsion by medusae requires the force of bell contraction to generate forward thrust.
Colin, Sean P.   +2 more
core   +2 more sources

Sonic Hedgehog Is a Member of the Hh/DD-Peptidase Family That Spans the Eukaryotic and Bacterial Domains of Life. [PDF]

open access: yes, 2018
Sonic Hedgehog (Shh) coordinates Zn2+ in a manner that resembles that of peptidases. The ability of Shh to undergo autoproteolytic processing is impaired in mutants that affect the Zn2+ coordination, while mutating residues essential for catalytic ...
Roelink, Henk
core   +3 more sources

Signaling cascades and the importance of moonlight in coral broadcast mass spawning

open access: yeseLife, 2015
Many reef-building corals participate in a mass-spawning event that occurs yearly on the Great Barrier Reef. This coral reproductive event is one of earth's most prominent examples of synchronised behavior, and coral reproductive success is vital to the ...
Paulina Kaniewska   +4 more
doaj   +1 more source

siRNA-mediated gene knockdown via electroporation in hydrozoan jellyfish embryos

open access: yesScientific Reports, 2022
As the sister group to bilaterians, cnidarians stand in a unique phylogenetic position that provides insight into evolutionary aspects of animal development, physiology, and behavior.
Tokiha Masuda-Ozawa   +5 more
doaj   +1 more source

Sex under the moon

open access: yeseLife, 2015
Moonlight alters the expression of a number of genes in coral cells in order to synchronize the release of sex cells across different coral species.
Didier Zoccola, Sylvie Tambutté
doaj   +1 more source

Sea anemones may thrive in a high CO2 world [PDF]

open access: yes, 2012
Increased seawater pCO 2, and in turn 'ocean acidification' (OA), is predicted to profoundly impact marine ecosystem diversity and function this century.
Andersson AJ   +15 more
core   +2 more sources

The Complicated Evolutionary Diversification of the Mpeg-1/Perforin-2 Family in Cnidarians

open access: yesFrontiers in Immunology, 2020
The invertebrate innate immune system is surprisingly complex, yet our knowledge is limited to a few select model systems. One understudied group is the phylum Cnidaria (corals, sea anemones, etc.).
Brian M. Walters   +3 more
doaj   +1 more source

Horizontal gene transfer contributed to the evolution of extracellular surface structures [PDF]

open access: yes, 2012
The single-cell layered ectoderm of the fresh water polyp Hydra fulfills the function of an epidermis by protecting the animals from the surrounding medium.
Altstätter, Johannes   +13 more
core   +1 more source

Ancient Venom Systems: A Review on Cnidaria Toxins

open access: yesToxins, 2015
Cnidarians are the oldest extant lineage of venomous animals. Despite their simple anatomy, they are capable of subduing or repelling prey and predator species that are far more complex and recently evolved. Utilizing specialized penetrating nematocysts,
Mahdokht Jouiaei   +5 more
doaj   +1 more source

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